Drying-machine for fibers



(No Model.)

ML MUSGREAVB. DRYING MACHINE FOB FIBERS.

No. 550,325. Patented Nov. '25, 1895.

WITNESSES.'

ATTORNEY.

UNITED STATES PATENT OEEICE.

MARK MUSGREAVE, OF PHILADELPHIA, PENNSYLVANIA. y

DRYINGMACHINE`FOR FIBERS.

SPECIFICATION forming part of Letters Patent No. 550,326, dated November 26, 1895.

Application iled January 28, 1895. Serial No. 536,481'. (No model.) A

To all whom it may concern.:

Be it known that I, MARK MUsGREAvE, a subject of the Queen of Great Britain, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvement in Drying-Machines for Drying Fibers, Yarns, dto., of which the following is a specification.

My invention relates to a class of dryingmachines which carry the stock to be dried through an air-chamber on endless conveying-aprons.

The invention consists in the combination of an air-chamber, endless carrying-aprons, transferring drums, and supporting rails having circular ends, so arranged and operated that one apron carries the fibers or yarn through the chamber, the transfer drum transfers it to a second apron, which carries it again through the chamber and transfers it back on the first apron, and is a third time carried through the chamber.

To enable others skilled in the art to make and use my improvement, I will now describe the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure 1 represents a vertical section of a dryingmachine constructed according to my invention. Fig. 2 is a section showing part of a carrying-drum, rail, and circular end. Fig. 3 represents a section of the carryingdrum, rails, circular end, and link-chain. Fig. 4 represents a section of the roller-chain for carrying the endless aprons. Fig. 5 is a face or top view of Fig. 4.

Similarl numerals and letters in the several views refer to like parts.

D represents the frame of the machine. The top, bottom, and ends of the chamber are shown in cross-section shadings. This chamber on one side is provided with openings A and B. These openings communicate with a chamber in which are operated one or more revolving fans. These fans cause a circulation of hot or cold dry air to circulate through the chamber of the machine, enteringat A, leaving at B, causing a downdraft through the machine. The dry air passing through the loose materials on the conveyingaprons extracts the moisture, which passes out with the air at B, is dried, and then returned again through A. This method of circulating dry air through the chamber and the construction of the chamber are well known to those skilled in constructing drying-1nachines. Therefore a detailed description of this part is not required in my specification. I will confine myself to such parts as I claim to be new and such other parts as co-operate with them and enable me to make a full disclosure of my invention.

In Fig. 1 the conveying-aprons are represented by dotted lines and with the numerals 1 and 1". These aprons are constructed of roller-chains, such as shown in Figs. 4 and 5, a chain on each side of the apron. These chains are connected one to the other by cross-bars 11. (Shown in Figs. 4 and 5.) To these bars are connected an apron of open construction, generally made of wire-cloth, and such as used in drying-machines. The chains are such as can be operated by a sprocket-wheel. The form of the chain is clearly shown in Figs. 4 and 5.

The supporting=rai1s 2 are made of ordinary angle-iron, the end rails 3 being bent to form a half-circle. The delivery-drums 4 and 4 are made of sheet-iron, iiXed to cast-iron ends, which drums are fastened to a shaft 16, shown in section. i

The wheel 5is a sprocketwheel. Three (3) are fixed on the shaft 17, shown in cross-sec tion.

6 is a plain flange-carrying wheel, two of which are fixed to the shaft 18, shown in crosssection.

7 and 7'are plain flange-carrying wheels, two of which are xed on each shaft 19 and 20, shown in section.

8 'and 8' are driven wheels, two of which are fixed on each shaft 21 and 22. V

9 and 10 shown by dotted lines in Fig. 1 are spurwheels mounted on one end of the shafts 21 and 22, shown by section lines, and being the same shafts on which the sprocketwheels 8 and 8 are mounted.

12 and 13 are sprocketwheels xed on a shaft, shown by the sectional lines. l

14 and 15 are ordinary chain-link belts, 14 being the main or iirst driver.

The operation of my improved drying-ma- IOO chine is as follows: The fibers or yarn to be dried is placed loosely on theapron 1 and at the left-hand of the machine. The aprons work in a direction as shown by the arrows. The stock to be dried is carried by the apron 1 to the transferringdrum 4, which drum is moved by the apron pressing the stock against the drum, and the drum is carried around by the stock. The circular rail 3 prevents the apron pressing too hard and packing the fibers, as the stock must lie loose on the aprons, so as to permit the dry air to pass through as they are carried through theairchamber. The apron 1 works close `to the drum 4 and wipes off the fibers7 dropping them on the apron 1. This apron carries them again through the chamber and to the drum 4', which delivers them again to the` apron 1, which aprons convey them again through the chamber and out at the righthand side of the machine.

It is obvious to a skilled mechanic 4that with my invention three or more aprons may be used. Inthe drawings I show two aprons; In some cases, and especially when hankyarn is being dried, the transferring-drums 4 and 4 should be driven by some positive drive.

I am aware that endless aprons are old7 well known, and extensively used in chyingmachines. The same is shown and described in English Patent No. 1,543 of 1858, and also in United States Patent No. 32,424, of 1861. The arrangement and combination shown in these patents I do not claim; but

What I claim as new and of my invention, and desire to secure by Letters Patent, is-

In a machine for drying fibers, or spun yarns; the combination of an air chamber, two or more conveying aprons, provided with supporting rails, said rails having curved ends; two or more transferring drums, one drum for each apron; said aprons and drums, so Working together, that the drums will transfer the stock to be dried, from one apron to the other, and carry the stock through the air chamber, substantially as shown and described.

i MARK MUSGREAVE.

I'Vitnesses:

JOHN SniNN, JOSEPH W. SUTCLIFFE. 

